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Old 01-21-2002, 06:19 PM
Ken300D Ken300D is offline
Registered Diesel Burner
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
Having a 1987 300D as the reference, the low oil light comes on when the lead to the sensor is grounded. The sensor is fit with o-ring into the upper side of the oil pan and has a connector pin for a signal wire. This wire goes into the wiring harness at some point.

Most likely reason for a sudden appearance of the dash light, after working on the car, is a pinched and grounded wire to this sensor in the engine compartment.

Hope this helps,
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